NIKE Dri-FIT Contour Red Mens Running Short Sleeve Top/T-Shirt Size XL 100% Polyester Dri-FIT mesh fabric designed to wick away sweat to help keep you dry and comfortable Rolled-forward seams for a contoured fit Reflective details for enhanced visibility in low light conditions Reflective loop on the upper back to keep media-player cords out of the way Breathable mesh fabric provides ventilation